网络编程Day2

TCP机械臂

#include 
#define SER_PORT 8888
#define SER_IP "192.168.125.64"
#define CLI_PORT 6666
#define CLI_IP "192.168.125.32"

int main(int argc, const char *argv[])
{
	//1.创建套接字
	int cfd  = socket(AF_INET,SOCK_STREAM,0/*IPPROTO_TCP*/);

	if(cfd==-1)
	{
		perror("socket error");
		return -1;
	}

	printf("cfd=%d\n",cfd);
	
	//将端口号快速重用函数
	int reuse =1;
	if(setsockopt(cfd,SOL_SOCKET,SO_REUSEADDR,&reuse,sizeof(reuse))==-1)
	{
		perror("setsockopt error");
		return -1;
	}

	//2.绑定（随意）
	struct sockaddr_in cin;
	cin.sin_family=AF_INET;
	cin.sin_port=htons(CLI_PORT);
	cin.sin_addr.s_addr=inet_addr(CLI_IP);
	if(bind(cfd,(struct sockaddr*)&cin,sizeof(cin))==-1)
	{
		perror("bind error");
		return -1;
	}
	printf("bind success");
	//printf("bind success %s %s %d\n",__FILE__,__func__,__LINE__);


	//3.连接服务器
	//3.1填充地址信息结构体
	struct sockaddr_in sin;
	sin.sin_family=AF_INET;
	sin.sin_port=htons(SER_PORT);
	sin.sin_addr.s_addr=inet_addr(SER_IP);
	//3.2链接
	if(connect(cfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
	{
		perror("connect error");
		return -1;
	}
	printf("链接成功\n");
	
	//4.收发数据
	char bufred[5]={0xff,0x02,0x00,-90,0xff};
	char bufblue[5]={0xff,0x02,0x01,0,0xff};
	
	while(1)
	{
		char ch;
		printf("请输入w&a&s&d:");
		scanf("%c",&ch);
		getchar();
		if(ch == 'w')
		{
			bufred[3]+=5;
			if(bufred[3]>90)
			{
				bufred[3]=90;
				continue;
			}
		}
		else if(ch == 's')
		{
			bufred[3]-=5;
			if(bufred[3]<-90)
			{
				bufred[3]=-90;
				continue;
			}
		}
		else if(ch == 'a')
		{
			bufblue[3]-=5;
			if(bufblue[3]<0)
			{
				bufblue[3]=0;
				continue;
			}
		}
		else if(ch == 'd')
		{
			bufblue[3]+=5;
			if(bufblue[3]>180)
			{
				bufblue[3]=180;
				continue;
			}
		}else{
			puts("输入有误");
		}

		//发送给服务器
		send(cfd,bufred,sizeof(bufred),0);
		send(cfd,bufblue,sizeof(bufblue),0);
		printf("发送成功\n");


	}

	//5.关闭套接字
	close(cfd);

	return 0;
}